Bicycle Calculate Gear Ratio

13 february 2010.

Bicycle calculate gear ratio. Watch this video for an overview or just scroll down to the calculator. What power is required to pedal at different speeds in different gears with and without a headwind. Gear ratio gear ratio is simply the ratio of the chain ring size to the rear sprocket size. This is especially true for young riders with small legs.

Ratio of the lowest gear of your setup. The small one will overlay the large one in a browser which supports tabs. Bicycle gearing is important. This handy little calculator can tell you that plus many more combinations.

In cycling a gear ratio refers to the ratio of teeth between a chainring in the front and the rear wheel s cogs in the back. 3 is green 2 3 blue and below 2 red. In contrast a low gear ratio like 39 x 25t. Bicycle gear ratio comparison calculator how does a 3 9 compare to a 2 10 or 1 11 drivetrain.

But there are a variety of ways to look at gearing and they all have different meanings. Many internal gear hubs listed and some of the cassettes are no longer in production. Derailleur gear ratio calculator following a number of requests over in the forum we decided to add a tool to enable you to easily calculate the gear ratios fitted to your bike. For example using a high gear ratio such as 53 x 12t is equivalent to riding a penny farthing with a front wheel that is nearly 10 feet or 3m tall.

How to calculate bicycle gear ratio. Ratio of the highest gear of your setup. For each gear ratio. Moving your mouse over the ratio will show speed you will achieve by pedaling at 100 rpm.

Shows table of all possible chainring sprocket combinations with gear ratio. How to calculate a bicycle gear ratio. Simple just divide your rear cog size from your front chainring size. Clicking on calculate generates two new output pages.

Colors group similar values. Use the top row of drop downs to select the number of teeth on each of your rear sprockets and the left hand selectors to enter the number of teeth on each of your chainrings. Also take a look at our complete bicycle gear ratio chart below to see how your size compares to other gearing options. A full size one and a small one which you might print out and tape to your bicycle s handlebar stem for reference.

For that gear set what gradient of hill you can climb given your preferred cadence weight and power capabilities.